Coal mining machine



28, 1931. N. D. LEvlN 1,815,931

" COAL MINING-MACHINE Filed March 8, 1924 4 Sheets-Sheet l July 2s, 1931.

N. D. LEVIN COAL MINING MACHINE Filed March a 1924 4 Sheets-Sheet 2 I '-July .28, 1931. N. D. I IvlN4 1,315,981

COAL MINING MACHINE Filed Marchv 8, 1924 4 sheets-sheet s N l l K Y. D nuenTor I Q u' AHorr July 28, 1931. N. D. LEVIN COL MINING MACHINE Filed March 8I 1924 4 Sheets-Sheet 4 Figsi anclj4 are' sectional -yiews taken alonp: the lonQituclin'al'central' Vertical plane my" f L Y* icompany,"'oFcoLUMBUsQoHm,Ato'o'RPonnToiv oFoHIo` i f i f colin MINING MACHINE ""'faippli'ctibn md yMar-cli v8,

eleby rthefcoal is Yfirst under-` The electrical object of this ch 'isvfa'dapteclwto kupon"anlslide` in' v rection joyerthek floor oftheming havingal conveyer adapted. to re. we l naaf -f teria).v froinfthe mine y and convey Vto kelevated dls'chargepolnts inthe 'rearlol the machines@ancljyhich11s associatedvwlth wat *23' y terial.,upon'z the inineloor. top: cut a: path or Vitselfy in imlnoyable v masses n of. said material Lrng. mechanism adapted te engage; ma-

" yonto the receivinggportionfoftlieconyeyer.-

f'urther objectis tofproyideA a machine ofthe class described', adapted toirstunder-f ycuttliematerialwhich is to beh-mined, and` after lthe" oyer hanging mass" has been olis;`

l lodged by .,other.. optionally e, selected instruy nielyitalities'7 to 'gatheiff4 said` VV:dislodged j nia;

terialiromithe ini*Il epfiof/)r andfnload; it into suitably@ positioned receptacles for "t rans pontationfromgthemine.

' areffullyset *forth"'ingtheffolloiyingspecilica tionreferencebeinghacl tothe accompanying -'cnihodirnentetLniy finvention-Yik Y Figs andare-afplanviewofthemachine illustrated vin'Figsg l and2.

ofi the machine.' 'y '4 @Onyeyer yChaim? FigsgQandlQ' are.diagramsfillustrating y oneniethod ofope'rating theniachine. ,f

. Lilgenumeralsfprefer,

' .fin the severalfigures-l -to sirnila-r parzt's 'trationy is not tio'ggsfiiiastfateu irithldfawngs, the Opf y l erative parts of'y the machine are vmountecl f upon abase plate l which is stiened `suitable.,angleoloars, suchas the bars2, to'V l A forma' supporting lpanY yadapted toyslide n vin any direction over theffloor ofthe mine. Securelyfattachecl. to thefbasel plate `ly is a main frame 3 which is composed osuitalole L Castings: shapedto .supply journaly bear.y

L ings Lfof the yvarious power devices ofthe machlne. Afmotor` lis mounted ,upon ythe' mainVA frarle to supply the powerbywhioh `the .Variouswelementsf of themachineare A, v

actuated. Y The inotor 4 may be oflany pi'eferredatype.suitable to they conditions under A. ,y which: the "ma-chine operates.v `For,puiposes vof illustrationlhave shown an electric motor y g adapted to. yreceive its actuating vcurrent through suitable, conductor; cables-fromY any 1,'ocmvenient--` source of,y electric supply, 'and provide'clwith convenient controlling devices',y

v, louty as'gsuchf'devices, are Wellunclerstood in n the art, ancl, as they torni no partin the pres-t ent invention, further description andillusthought to loerequired atthis lllolunte'd upon the mainframe 55 is amain y y f conveyerof the Well known type comprising f two paralleltroughs @and 6 'positioned' in substantially the same horizontal planes, and each hayinga-flaring outerside Wall 7 Y andan innelupright'sicle Wall 8. The inner side Wall 8` isL builtuppf suitably shaped.y

bars to formfguileways wherein travelsyan lendless chain 9 to;which,isattachecllateral-' Vly projecting .scraper flightsl .l0KA adapted yto y, engage material in the'troughs andanoye f therealong. i Int .Fig.,} 8 ,of the` 'drawings il.r i mhaye shown, for purposes of'illustrationja A( ormofchain anclfiightswhich is especially 1 H 'adapted vtoV the f purposes yoftliisinvention. hereillustrate'clithe chainl9co1nprises 4a series ofllinks 12 having laterally projecting y lugs 13 to which therfiights" are'secureflfyp kby, suitablev rivets 'or other approved fasten?H ings. 'TQ theends f the links`12 areattweak-'fer 'mevemenfaboub the verticalv 'lndesftlv QOUDQCDWDIS l5 *anflg 1.65 Y and'theseare connectedk together in pairs by QLEV'VI'N, oF"ooIUMnusjfoHIoQ/AssIGNoR TQHEJEFFREY MANUFAQTimmer-v 30 En the preferred A U the lioiizontalpintles17 to render Vthe 'chain' 100 n flexible in both `horizontal and vertical planes,v and topermit said chain to folle-W the contour of the conveyer. vstood however, thatl any other type of ychain which is adapted'tolexnre' in both vertical orhoriZo-iitfal planes'may be siilosliitii:ted for that ab'oi'refdescribed Without departure 'from the spirit.omy invention. yThe flights 1() may be ef, :Preferred -form adapted te veyer 'Preferably Alfhave Vfoiiiied these flights of relatively lthin horizontallyfdisrhelep v posed plates having their lateral edgeebevl eled, as at 18, topermit-'t'hemL-to felide vli'ind'er,l

'211,101 thereby dislodge entaneledfeements 0f the material which is to bejtransporteld. L

tile reward ngi' df alle oliv-ayer ai@ chain passes y aroird "a 'cnrvedfguidevay heel 29.113 which 'ier engere@ is iaye `0 rilevati..

7 i caijshaftfai, fan-cifre this,r shafeis sedare@ a bevel i gear A vvhihfeiigages fbevel pinion 23 :attached to the I longitiidiii'ally. 'extending' i Y HM fr `Corineclte'd 1a! longitudinally etendig -pow'erslial't 4() throi'ighja pair oit'be'vel gears miningniachinefart. The critter armflleoni.-

Vp'rises an eliigate'd "frame -iipontlieliateral edges of Whiohare formed giiideways whereinigtr'avels ane'n'dless cha-1n 35, oii the'links of. .ivhich `.are termed laterally projecting sockets viv'hereinare secnred'ciitter bits-37. The' ciitterjchain 'passes around and 'is Eattuatedv a sprocket ivlieell` liiiedI to the lower end-'oa vertida-l shaftQQand'tho'Shat-SQ is ai ana 42. "-rhe here 40' extends. iongitudin'al ly of the machine .in :aligninentfwith the polver shaft 28,andf'is. connectible thereto Y y by clii'tcli member 43Whih issplined to thefshaft 40 and is'a'dapted'fto er fra-ge clutch 'teeth I'fo'r'med-on the `face 'ofthe sprir-pinion 44 which Iislliieyed -tok thelpovver shaft 2 8; The

, spi'ir' pinion 44 meshes lWith fa spur `gear 45 in sui'tablefb'eaiiiigs of the eitension fra-me 335m rall'elism 'with the power shaft ,28 To the reenter" shaft 46fis keyed a -spur )pi c l'the jspnrj gear l48, is formed `'clutch y'teeth f adapted? to engage thefclu'tch member 43 It is to be underlctea, and rap 'ii'igdriinisl l lfy rotatableiiponthe'shaft40: YOn the yface thering is'aat't Vclutch member "43, and the proportions yof tion the lcutter Ifha-in 35 Vwill be driven `directly frointhe shaft 28 at ay relatively high .speed.suitable;foroiittingthe coal. lNhen move material alongtlie troughsV of tlfieooiil said elilteli-fmeibi-fis ts exreineferward position the Yoiitter A'haiii "35 will be driven direotlyjjiiijoni lthe sha-R28 at a relatively high speed suitable for cntting the coal,

Whf'en *s'aid"cliitch'nember is in its eXtreme rearward positionzthe critter V chain 35 Will be driven :through the Agearsg'44, 45, 47, and

Wiiidi'ngdiiis 57 and 58 ftofivhicli -re atable, the

'enfin icliare` feed rofpes59fand 6) respectivelextension l6l which `lreenetiliites' "the feriving iaft 551.

by the engagement of ai pliira t eing icorn end of the Cylindrical efitensonlll is secured a disc 64 ivliichcris formed g ajoiirnal bearing oitthesleevel65-is a s creiv thread' to which is 'ge loliicentrie ring-'67; To Va'clfedh plurality of pins 68' which project throng Suitable aperti'ires for 'the-discs 64 andengfige presser plate 69 l concentric* and in` '.,contact with thel friction l discs o3; Whenthenut66* is rotated-in one 1 directionfrel'ativeto-,the sleeve f 65 the pinsk 68 Ycause'eng"aglemen'tfof the friction "discs 63 and'r therebyfdrive the; shaft 1555i and; when ijsaidl i nut i rotated I inthe-A f opposite direction@ the' re upon the vdiscso isirelie'vedto per-` Y mit eishaft fto'reniainidle. VAspur gear 70 formed yupon the {peiipher'y fof vthe nut l engages a pinionil rvattached .Ktothe' control? j shaft 72 Which'is Vjournaled"infsuitable bear-- vings oftheniain framef'andjis providedWith Pire - ahandwheel' 73 bythemanipulation ofwhich the nut 66 Vmay be frotatedn either direction Y togcontrol the actuation*fof theclutchn A ball 'bearingjl'iislinterpo'sedrbetween the nut 66'5 "and the ringl67-to1prevent undue 'rictionbe-l 'tvveen the' p arts; VY@Splined tothe shaft 5 is a jaw V'clutchmemberf'l adaptedto be movedk longitudinallyoffsaidfs'haft jby asuitable dutch/Shifting `leve p s .'ex'treineilouteryposifI tion',-itengagesfvvit r4clutchteeth Tiermed upon 'the i'n'ner facefof lthe 'Winding drum: 5S

l tofooniieotsaid' drum -dire'ctlyfwith said' 'shaft i y55", and-Wind theropefGO 'at` arelativelyi high ispeedi. Formed onlthe clutch ymember L75Qis A fniember' isinyitsextreme inner'fposition,{to

aspfur"pinionk 7,81' adapted, when said clutch mesh witlifthe spuij-gearf79 lliXedzto ai counter *if 'shaftjSOs"The'counter 'shaftiSO'fis supported f 'in suitable A, bearings ofv the' main frame, 'and to A its outer y"end/is .{iXedq apinion*rv 81 which i engages the lspur gear i' 82 Y formdiantegral Vrwith the `Winding drum 4 5 8. "LThese gearsjare oi'fsuoh" proportions thatjivvhen ftheV .clutch ymember 751is in position to cause' 'engagement between vthe gears# 81 and'f82, they druid-@58 ,f ,will be Hdrivei'i YtoWindthe'ropei 602 at* arelavofthe'appropriate'druinqf' f f f: 'Anauxiliaryconveyer,89, y 'similar yto tli'e main conveyerlyabove described',

i tively' slow speed. Suitable" guidingrsheaves 83, 84',85318og87'andf88garemounted'upon the supporting pa'nl at each side :oifthe machine",

' and the feedropes 591'a'nd O'niay 'be passed" i around'k thefpreferredguide sheaves and *alt-4 tac'hedtofsuitableanchor acks towards which the machine may be'. dravvnjby theactuation ,y is pivotallyl mounted upon "the 'base' lplate l in y iposi-tion to-receivel material discharged from 'saidfmaineonveyen andthispivoted yconveyor y is 4adapted Atodischarge said lmaterial into-A i suitably posit-io'nedv receptacles, such? asv mine carsfwvagonsl'othe like',ffor transportation froni 'theininey "The 'conveyer chain' QO-o-'the y pivoted Conveyeii.892y pass'esaround and is l wf actuated by a sprocket wheel 9i which is fixed illustrated one method of' operatingrthe above described machine upon thefs'horti'vall 4'systeing inaroom ,o'aminef employingr the of alcon's'truetion roomV and pillar method :of extractions Asa shown in Fig. 9, the machineis -ir`iitiallyposi tioned at one side of theminerooni, preferably kthe righthand side,withthe cutterfarm n y n A 34 extending'finto` the corner formed bythe f' rib Wallf92 and Working "face,` 930i the' coal.k

- kTheieed rope L59 being' drawn out from` its) n i Winding drumufit passes around the guide l sheave V911i and: attached to anV anchor jack 94 positioned against the rib,v wall 92infad- Vance"otthemachine. The feed-rope GOfis y i then'drawn yout VfromA its Winding" idrum, j

passed around theguidesheaves 83 and. -and Lis attachedto the anchor jack 95 posi-`v tioned adjacenty the `coal face 98 and the left f hand riby wall 96. The clutch member-S75 are then shifted to their inner positionwhere they `enzgtage iwithuthe' `gears o the countery shaft "f 8O to drive the Winding drums 57' and `5`8-at y relatively :low` speed,` and thehandfwheelsgf y are I adjusted Atol oausezth'e actuation of rthevr i V frictionaclutches to rotate said drums. Asthe f 5 ropes59faand`60Y are AWound vupon their re-`y i specti-ve drums, 1the"machine will vbe moved n longitudinally forwardy to thrust 'the cutter bar llfinto the coal'to vformla sumping,.forr

controlled Las to feed; thekr machine flater-.ally across theroom'tofthe position indicated Fig. 10, formingajkert,beneathfthecoal at vthey levelof thegmine Hoor.y Aftrqthe `completion of the undercutfias above described;

thefuseroexplosives,L or" other Well un` derxstood 1m-3ans; @the "Coal above the undercut may then belbrcke'n fdo'vvn'; to lielin a shattered heap #upon 'the mine ffloor; after, which 'they anchor jacksff94= and 95 maybe restoredto the positions indicated 'in Fig, 9 and'ihe machine 7 caused to describei'movements siniilartothose abovedescribedl Y B vfthe manipulation yofthe 'K Vclutch 43 themoxj'ement of the cutterchain may be-reduced to. akspeed suitable to gather z inate'riallintothe conveyer. As' theinachino i Y advances the cutter bits Swill engage masses f I yof dislodged coal, movelthem rearwardlyinto Vthe path ofthe conveyeriights l0',-by\vhieh they Will bedrawn' intovandalong. the 'con-y g vvet-war` trough and ydischarge linto conveniently positioned` receptacles for transportatio'nffroml the mine. z Shouldy the"tragmentsolfy dislodged coal beso interle'clred asjtof render theirmovement impossible, the cutterbits n will' excavate .a path? for -1 themselves', thereby .Y

undermining p l said interlocking l'g-ffragments andSultimaltelyidislodging,thef'same movej' -th'emlon'to the conve-yerf It is'apparent that?l i' the apparatus! above described may bey operjated in many `otherWays to accomplish the j desired' result. :The f above described "method 'enteringf'cuu afte'ravhich'bythe manipulation-` l 'l Vof: the haiitl'rvlieelsz the rateoi4 Winding` and unvvindingthe'rop-es 59 andGOfWill ybe so the' anchor-jacks 94""andf95 ymay/be reposi 'l f tioned, fand the. machine; backed laivay l from the :coalftace landfrestored to the position in'dicated'in Fig. 9.' wir f being intended menelysto illustrate onefzofrt'hfel CIU possible methods.

receive material f .at 'the floor "0`f. .the mine, of an elongated frame. projfectingvfrom. the 1re ceivingfen'd of said conveyer, angendlesschaiii adapted to travel in-guideways of saidv frame, material-engaging elements Vcarried by said Vchai-n adapted to cut a oath for said frame inl immovable masses ofl material aiidto move movable. masses thereofoiito said conveyer,a motor connected:aiidarrangedjto actu'ate saidV rccnveyer, vand optionally lcontrolled ldevices connected with said motor to factua'te said endless chain at either of twoispeeds..

2.V ln acoalV mining machine having a bed yplate, the combination with lan `elongated conveyor having-flightsl adapted to engage *said `bed plate to `drag Vdisrupted material from lthe ioor of the mine vadjacentlthe-.mine ,face-and deliver at elevated points tozthe rearV :of theimachine,"fof'anelongaterd .frame pro- `iectingfroni the receivingzend -of said conh i' vcyer,` an endless :chain i adapted to travelA in i 1 guideways vof said iframe, fmaterialengaging elements mounted on said chain', and means Vto maneuver 1 said .machine bodily over the mine floor to engage. the y,material fengagin'g elements at the free fend of-.said :frame iii-the 'V mine face to `for-m sumping cutftherein -oiv to 'engage the materialV engaging elementsai't the. sidel of the frame ,iii'the minevr face to 1 form*- akerf Aatslibstantially' the leveli ofthe mine' {ioor and'fto move .masseszofA disrupted `Qn'iatef lrial into f position to beA gathered 'by saidconf veyor,the flights' of the forward end ofthe 'conveyor i `working Min VVfthe lower Y I:planes yof travelfof sa-id materialjengaging;elements. Y 3. :In .a coal, miningfiiiachinewhaving abcd V plate slidable on tlie'niine fioorfthe combination(V with an elongated yconveyor s having l flights adaptedrto engage saidbed gplate and slide thereover :to scrape disrupted 'materialvk from Ithe iioor of the-mine adj acent vthe mine face and vdeliver at elevated poi-ntstolthe rear of the machine, of an elongated frame prof -jectingjrigidly from the receiving end of said Y conveyork ink substantialk alignment therewith,l

an endlessVchain adapted :to travelin guideways of said frame-material .engaging ele-v ments mounted on saidchai-n, and meansto maneuver. said Ymachine bodily overfthe mine `floor to engagethefmaterial engaging'ele-V ments attheree end of said framey in .the

mine facezto'form asumping cutthereinfor Y to engage V'the material -engagingelements at the side of the frame in thefmine face-to .form

'akerf' at, substantially Sthe levelfof' themine floor and to'move massesiofgdisrupted fmaterialfinto Vposition to be :gathered by said .con-V l. -veyor,;th ef=flights`at the `,forward endfof the conveyor working -in'theflowerjfplanes of traveliofsaidinaterialengagingaelements.

, e. Inga-coal, ininingrmachine, Vthe combination withan-elongated conveyor pan having ay receiving end. adaptedto rest directly on the ,mine-floor, and a draft 'deviceY operating along said pan and having conveyorfiights engaging` said ,pan to movema-terial thereover., .of

i a :bracket -inrigid connection lwithfsa-id pan and'r extendingin :'advanceof vthe Yforward limit offsaid draft device, an elongated.hori-` zontallyfextending cutterarm securedfat one end 'to'theforwar'd end of said bracket, a cutter chain adapted, to :travel in guideways onfsaid-arni, driving means -for said draft de@v vice and Vsa-1d cutter chain, vfandineans. Vltov maneuver :the machine over the mine ioorV-to engage said cutter chain with a massof disrupted material, said chain'acting-to` deliver V said material to said draft device.

5.. In a coal; mining machine, :the combina# tionwith lan*y elongated 'conveyor pan having a` receiving end -adaptedt'o rest directly on themineffloor, anda `draft. deviceoperating along Y,said lpaiiand having High-ts engaging said pan tomovefmaterial thereover, of -a bracket in rigid connection with said pan andfeztend- V ingV in advance of the Vforwardlimit of 'said draft device, an elongated--hor'izoiitailyreeX;l

tending cutter armsecu-red -at one end ito `the for-war end-of said bracket, the secured endv ofsaidcutter anni overlyingthe vreceiving end of said pam-acutter chainadaptedtotravel in guideways on said arm, ydrivingQjiiie'ans' `for saiddraftdevi'ce and said cutter .chainsaid V4 driving means includingspeed ychange gear ing Vfor-.the cutter chain, and means fto ma# neuver the machine jo'ver ythe mine lfloor to engage said Acutter chain with V-a" .mass of dis-i pan to move material thereover, of a bracket i in `rigid connection with saidpan andeiitend ing- `in .advance ofthe forward limit `o'fsaid draft device, an.elongated.horizontallyextend ing cutter arm secured-at oneend Ito the Yfore ward end of said bracket, a cutter chain adapted 'totravel in guideways on saidar-in, driving means for said draft .device vand `said cutter chain, said driving. means f' including speed change gearing for the cutterlchain mounted von said bracket, and means toinal fneuver-the machine over the mine `Yfloor. to engage saiducutter chain with amass -offdis- Arupted,material, said .chai-n' -actiiig'to deliver said-materialto saiddraft device. V

- 7 Ina coil miningmachinmthe combina# V" tion with an elongated eonveyornan having a receiviiigfend adapted to rest Vdirectlv on l:the Vmine :floor and adelivery endelevated above the miiieiloor,and,a draft .device op- .eratingalong saidgpainof a.`bracket in rigid 16.Y jlna coal mining machine,thecoiiibina;

chain acting ,town power ktol #deliyer saidimaterialfrom amineffloorontosaid pan inthe-path oflsaidsdraftdevice. f i 1, 18E'Inacoalzinin' gini achine, the combina- `15 tion ,"vvith` aneloi'igated` conveyor' pan having f '.areceiving end; adapted to rest directly on `the a "inineffloor anda-delijveryendelevatedahove I y tliefininekflooigsaidconveyor panA being mov-L able? longitudinally 'and y,laterally over the ine floor :and 'having 4'all edges .normally disn osed to-scrape and lift material from the mine lfloorioiito said vvpan rand a draft device' operating along saidy pan, yof a bracket in fri'gidccnnection'with saidpani-and extending device,V an! elongated horizontally extending i cutter arm 4secured yat one endto theforvvard end of said loratken` the,l securedlendfof :said f 'cutter'farm overlying r the" receiving` f end of f fsaidfpanjacutterichain adapted' kto travel in guideways fon said arm, driving means for Asaid: draft deviceiandasaid cutter l chain, said rdrivingmeans including'- speedchange gearingforfthe cutter: chain, and means to Y Y maneuver themachinezoverthemine door yto i. gagejff said cuttervrchain 1 with a mass of "d rupte'cli'n'ateriahV` said chain` acting toy devensaid inaterialgto*saiddraft'devic-e; li iii-a coal mining yinachineg thecomhinationl'with yanelongate'd, conveyor panihaving a receiving end adaiptedgjto` rest directly on the @mine flo'orl anda r'deliverygeiidelevatedy above -i kthe mine floor,l and fa draftf'devicel operating I' itransverselyfacross'theadvancingendofsaid ,,paii',iof ja: bracketgjinrigid (connection with 'said panandgextending,in; advance of the for -fvvardt limitV off'saidzdraft device, aneloiigat'ed @horizontally eiteiiding *cutter arm.""fsecured i atone'fend'tothe forward endy of said bracket, razcutter vchain adapted yto vtravel ,in..guide- *Waysfonf s'aidzarm, drivingfmeans for, said i draft deviceand 'saidfcut'terfchaim .said driv l x ingmeans including', speedA achange.l gearing yfor the `cutter ichain,fand rmeans toy maneuver ff f the vmachine over? the mine-.floor vto" engage fsaidcutter ychain*with aimass of disrupted Y materiah said Chaim-[acting :to deliver said inaterialftoisaid:draftdevice. u 10.15 Ina coalfminingzmachine,thecombina v ftionzwith anQ 'elnglatedr conveyor "loany yhaving receiving'end-Padapted to resti directly lon h minevfloo'r, andi-adraftv device ycomprishy; side: on'said pan, of a bracket 'mounted `at overly the amine?Y floor te' engage .said cutter ji? chain with la' mass A'of disrupted material, sai d liniadvance*of the 'forward limit of saididraft ng g advancing andv returning sections ksimile 1 the i `forvvarl end? of F2 said panjhetwveen f the draft ',devicei.

1:sections of said draft! device, an elongated '5 horizontally yextending'cutter arm secured J y yat oneend totli'e'forward end of said brackr draftfd'eviceaudsaidcutter chaiinfsaid cha-in factingftO' deliver saidinaterialfto said draft f-(levicefv f 11; `iina 'jcoa having a receiving'end adapted to rest direct- Alyon the mine flooranda delivery end spaced :labove the mine door, and 'a draft device conprising-advancing and returning sections side side'oii,saidlpam of abracket mounted atnl the k forvvardend of said pan -between thefsec- :tions/fof; said draft device,fan elongatedyliorizontlallyextending cutter arinsecured; at one 'eiid'gtofthe forward' end of said bracket,-`aw cutter-chain adapted totravelin giiideways on ,i arm', driving, means for Vsaid' draft device and said-cutter chain, saidV chain act-` 1inggto,deliverf'said inateraly to said draft f tion With'an elongated conveyor pan having yaireceiving end adapted to'rest directly on the mine flooranda. deliverv-end spaced Valcove Vthe mine` floor, and adraft device comprising k'advancing andreturiiingsections side by side onlisa'idpa'n,` of a bracket mounted'atthe for- Lvvard endof said panlbetiveenthe sections .of saiddraft" devices, an `elongated horizontally f extending cutter arm secured. at one end toV tlieforward end of said bracket, the securedty y jendsof said cutter armY overlyinglthe` receiv-` ing-end of said pan, ai cutter chain adapted to* ki travel iir7 guideways on said *f arm, vdriving ffineansgfo'r said draft device and saidcutterv A chain, f saidsfdriving means' Vincluding speed' .cliangelgearing `for Vthe cutter chain, fand means to maneuver'tlie machine over the "mine floor .tengagesaid cutter chain'with a mass; :offidisriipted: material, said chain actin'gito deliversaidmaterialto saiddraft device; i

13;.111 a coal mining machine, the combina@V .tionuvvithi an elongated conveyor pany having Y :receivingend adaptedato rest'directly on f- @the ininefloor' andra deliveryA end spaced' above the mine iloor,".and a draft device c'oin-` prising advancingand returning sections side I; y

by sidefon said pan, of a bracket mounted at the forward end of said pan'betvveeii the sec# Y "i i tions of; said draft device,`an elongatedhori-y v zontally extending cutter arinsecui'ed at: one;j`r` j end'to the' ,forwardy end of said bracket, a

cutterchainadapted to travel'in guidevvays 'f J 0n saidiarm, driving means forsaiddraft dej y vice andsaid-cutter chain, said driving means v i including speed change gearing forthe lcutter .chain and means to maneuver the machine over; theA mine floor vto engage said cutter chain actin l 'mining machine, the' coin-yA 1,@ -k n Y i A n j K uination with .an elongated conveyor pan 12.?111 a coal mining'machine, the-combina! f chainvvith a mass of disrupted material; said to deliversaid Iiiatelalt9k ,Said

l .7514. lIn a machine, a support, an Velongated cutter ,arm projecting from said support,a cutter chain-adapted to travel.V in

elongated cutter arm, a cutter chain adapted to travel in guidewayson 'said.arm, a motor,

.and'drive means between said motor and said l.

cutter chain, 4said driveV means including speed A'change' gearing whereby `the cutter 15 A determined speeds. K

j l16. 'In aV mining machine,anelongated cutter bar and a cutter chain mounted thereon Y chain may be driven at a plurality of pre- .forvlcireulation thereabout, .a motor, change speed dr/ive,y gearingv interposed between said motor and said chain to-cir'culate the'l'atter at a relatively fast cutting speed or at arela-f tively slow gatheringspeed, 'andi means Y driven from the motor yand controllable independently Yof the v,cutter chain drive .gearing to feed the machine and therewith the` cutterV Vhar to vform a hert in a mine face or to engage i. and gather Yout disrupted material.V

'17, ln a mining machine, amain frame, an v elongatedcut-ter bar having a cutter'ichain l inountedthei'eon lfor circulation thereabout,a

bracket projectingfrom they main frame and supportingthc cutter bar `lironiits projecting end, ajmotoijsupported on the-iframe, :and dri-vel connections between'the motor and cutandv having a substantially' horizontal-.receive j ing portionV adjac-entthe floor, a cutter freine adjacent the mine floor, the receiving'portion projecting froinvsaid mainV traine at the ire'- ceiving end of the conveyor, material engagf ing elements *Yt'ravellinga'round said vcutter frame, the active elements travelling in planes "of said'conveyor being movable transversely of said horizontal receiving f portion, vand means to maneuver said'niachine bodily over the mine ifloor to engage the material engaging elements in the mine face to form av vsuinp-V ing cut therein or to lengage said'elements in the face to form an extended herfthereinand j to move masses of disruptedl material toward the receiving end of the conveyor. y Y 19. In a mining machine, Va main frame, an

elongated conveyor supported on said frame and having a substantiallyhorizontal reoeiv# ing portion adjacent the Henna-cutter frame projecting froinsaid lmain frame at the receiving' end of the conveyor, materialengagingelements travellingaround said cutter frame, Vthe active kelements travelling in planes adjacent thefmine'iioor, the receiving portion of said conveyor being movable translversely ;of said horizontal receivingportion,

means to maneuvery saidfmacliine bodily over the mine floor to engagethematerial engag- Y ing elements in theinine face toforina-sumping cut therein or to engagensai-d elementszin Vthe face to forni an extendedkerf therein and Vto move masses of disripted material toward Y the receiving end oil-the conveyor, and -means to caus-ersaid material engaging telements Vto c travel at a relatively liighcutting speedor at a, relatively low gathering speed.' 1.

A 20. Ina coal mining machine,;the combinay tion with an elongatedvr coi'iifeyorada'ptfedtoV gatherdisrupted .material from the iioor of the mine adjacent-theniine face' and deliver;Y VVat elevated points to the rear ofthe machine,

Otan kelongated Yframe projecting fromthe receiving end of said conveyonfan endless sninping out therein or toengage the material engaging elements at the side of the frame in the mine .face to form alrerf atsubstanftiall-y the level of theinine floor and, 'without oh angingthe direction of travel of the chain Y to move masses of disrupted materiallinto position to f be gatheredliy vs'aid conveyor.

ln'a coalminngmachine,'the'combina tion with an elongatedlconveyora'dapted to `gather disrupted material from the loor of -tliemine adjaoenttli'e mine faceland deliver Vter chain including lchange speedv gearing' mounted on saidbracket. 18. 'In a mining machine, amain frame, an. i elongated conveyor supported' on said frame 40:

at elevated lpointsto the rear ofthemachine, of c anV elongated: `frame. projecting` rigidly '22..--In a mining machine,; amainkfranie an elongated conveyorI supfportedi'on said iframe and having asulbstantially horizontal receiving portion 'adjacent thelloor, a cutter i frame Avprojecting from "saidV main vframe at the receiving end ofthe 'conveyonrmateral engagingk elements travelling f laroundv said cutter frame, theme-tive elements travelling Y i in p-lanesfadjacent the mine floor, ,thei'receiving portion of ysaidconveyoirbeing'innivablev `transversely r of said4 4horizontal receiving portion, and vmeans to maneuver said ma- Chine bodily over 'the mielflor' to" engage l from thefreceiving end?- ofsa'idiconveyor in ,j substantial alignment ,1 therewith,i` an"v endless 1 chain' adapted to travellin guideways of said -fraine,f1material engaging 'elements '.inounted on said chain,*and meansto'inaneuver said machine bodily overthe mine floor toiengage jthe material engaging elementsat the free c'end of'saidfi'amein the mine'rvlfa'ceto form a the material engagingelements in thejmine *face kto form a sumping cut therein or to engage said elements in tlie`face to'forin an exf. tended lierf therein and, without changing the direction of'tra-vel of the chain to move y masses of disruptedimaterial towardtlie re-l ceiving end of thecconveyor.' i

In a mining machine, ya main frame,

y anl elongatedr conveyor supported on said frame and having a substantially horizontalV receiving portion adjacent the floor, a Y 'cutf ter frame projectingfrom' said main fra-me at the receiving end of the conveyor, ma-

" terialy engaging elements'travelling around l said cutter frame, the activeelementls travelling kin planes adjacentthe mine floor, the

receiving portion ofc., said conveyor being vrjlnovable transverselyo said horizontal ref.

"travel .of the chain tomove 'masses of dis'- yrupted materialy into position to Vbe gathered by said conveyor, and means to cause said f material engaging elements to l travel at" a relatively high cutting speed or at a relative slow gathering speed.

adapted to be r'r'ioved longitudinally and lat-v 24., in a mining machine, they combination of amain frame includingl a bed plate ,erally over a mine ,floor and havingxreari Vavvardly divergin'gv edgesy normally kdisposed to? j scrape and lift" material from `the lmine f 'door onto saidplate, meansfto maneuversaid linachine f bodily all directions lover the mine flooryof an endless conveyorj carried ',byuiemachin@ VVwil-,iria weaving portion ai 1 -ranged adjacent thefbed plate yto receive ma- [n terial ltherefrom,` and a kerffcutting instru- `ineiitality extending frfmkthe forward end o said' machine and havinga 'cutteri chain f 25.y ln aminingmachine, the combination lof, a main frame including a bed plate adapted to be moved longitudinally and latlerally over a mine licor and having rearwardly diverging edgesfnormally disposed @to scrape' andrliftgmaterial from the-mine tlooronto said plate, means yto maneuver said machine bodily', in allV ik directions over. kthe mine floor; of an endless conveyorcarried by --`the machinev with its receiving `portion arranged adjacent the bed plate to receivematerial therefrom, and a 'kerf cutting instrumentality extending.:fromy the `forward end Vofsaid machine and havingr a.k cutter chain .fast cutting speed or at gathering f speed. y

426. Inia mining a 'relatively slow machine, the combination f feo'tfa main frameincluding "a hed plate fadapted to be moved longitudinally"andlat-y erall'y'over a mine 4floor and having rear- -f wardly. diverging edges normally disposed. i i

j t0 scrape/and lift ymaterial *'rom. the mine floorr onto said plate, meansv to;y maneuver "saidimachine bodily in ally directions over f the mine Hoor.; of an endless'conveyor 1in-1V {cluding flights engaging said bedfplate'for scraping andpropelling material therefrom,

movedisrupted material onto said bed plate `.in *the path of ysaidy conveyor nights.'

Y ed to be moved longitudinally and laterally y'anda lkerf cutting instrumentality extend-y n ing iomthe `forward end of said machine;v andoverlapping said bed`v plate, said hert -f cutting instrumentality being adapted to "over a kminek Hoor and having rearwardly f f diverging edges normally 'disposed to scrape andlift material from the mine floor ontoK4 saidy plate,means to maneuver said machine bodily in all directions over the mine floor;

1 ofian endless conveyor 4having material mov-'1 n ingdevices movabletransversely across said i "bed-plate for scraping and propelling mate-` rial'. therefrom', and' a ykerl? cutting; instru- (mentality exten-ding' fromv the orwardend not'saidmachine and overlapping saidqbed *y plategpsaid ker-f cuttinginstrumentality be" ing adapted to move disrupted material onto said bed flights gitudinally of said machine, a kort cutting ting speed or at a relativelyslowr gathering l i speed'for causing the cutting instrumentality y.. 115 Y j tomove disrupted material from the mine floor finto the path of, movementl otsaid endless conveyor.

" 29. In a mining machine, the combination ofa main frame; of an endl-ess conveyorassociatedtherevvith and having its receiving end disposed in close proximity to the mine Vfloor for vpropelling disrupted material lon-y gitudinally of said machine, a kerf cutting:

instrumentality extending from the forward n* endor" said machine inclose proximity to the vmounted thereon` for circulation thereabout `floor, and change-speed drive gearing` for.

" with its inner portion y,disposed kabove said bediplate for delivery of A"disruptedmaterial Y to said conveyor, `aifid, change`speed means n i f0.1 driving Sdvfuttfchfinfltf a Ileltvelyv cutting vinstrumentality to move disrupted' 13o f actuating said ,kerf cutting instrumentality tively slowv gathering speed yfor causing the plate in! the path of said yfconveyorf la c 28;V In a niiningmachine, the combination of amain frame; of an endless conveyoras'- sociated therewith and having its receivingkr end disposed in close proximity to the mine n c floor for propelling disrupted material lon#4 Y l mounted tliereonfor circulation thereabout with its inner portion disposed above said bed plate for delivery of disru'ptedmaterial 110 j Vto' said conveyor. M Y

at a relatively fast cutting speed or at a rela- F8 Y r e n' I 1,515,981

material from the mine floor into the-pathof movement of said 'endless conveyor.,Y j V f 30.l In a mining machine, the combination of a mainframe, an armv for supportinga' 5 kerf cutting instrumentality overhanging the .Y

main Vframe', Yan endless conveyor mounted on 'themain frame and havingpa portion traversing beneath .said `overhan'ging arm for moving material longitudinallyof said frankie,

' jg VVand a-lrerf Cutting instrumentality supported said overhanging arm andfineluding'ooal J cutting inetrumentalities arranged to pass loeneath Saidoverhanging arm and in proximity to said endless eonveyor for moving dis- 1 rupted material .directly into the path of Said f` endlese conveyor;y l l j 31;. [Ina mining machine, they combination Yoi amain frame7 anparmV for s vupportingla Y kerf entting instrumentalityoverhanging the 2e main frame,anendlessl Conveyor mounted on :the main frame and having a'portion trav- A ersingbeneath said' overhangingV .ar1nfor niovin'g'material longitudinally of said frame,

and a lerf cutting instrumentality supported -hy said overhanging .arm and including coal 1 Y Cutting instrumentalities arranged to .pass y jbeneath said overhanging armand inproximity to Said endless Conveyor for moving disrupted material directly into tlie'path of said endlese'conveyor, and a change-speed drivemechanism mounted on said overhang-l i ing'a'rin for operating saidkerf cutter atdiffferent speeds; u v v a a vIn testimony. vvv'here'ofll have hereunto ket 7 myhand. j ,l a

- "NILS-D.

yte' 

